Home / 3,678.25-5,075.40-2,186.12

Finding the Fourth Proportional to 3,678.25, 5,075.40 and 2,186.12

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Solution

The fourth proportional to 3,678.25, 5,075.40 and 2,186.12 is: 3,016.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,678.25 : 5,075.40 = 2,186.12 : x
  2. Step 2: Convert to fraction form
    3,678.25/5,075.40 = 2,186.12/x
  3. Step 3: Cross multiply
    3,678.25x = 5,075.40 × 2,186.12
  4. Step 4: Simplify right side
    3,678.25x = 11,095,433.45
  5. Step 5: Solve for x
    x = 11,095,433.45/3,678.25
  6. Step 6: Final answer
    x = 3,016.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.